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Synthesis, characterization, monolayer assembly and 2D lanthanide coordination of a linear terphenyl-di(propiolonitrile) linker on Ag(111)

Chen, Z.; Klyatskaya, S.; Urgel, J.I.; Ecija, D.; Fuhr, O.; Auwärter, W.; Barth, J.V.; Ruben, M.

As a continuation of our work employing polyphenylene-dicarbonitrile molecules and in particular the terphenyl derivative 1 (TDCN), we have synthesized a novel ditopic terphenyl-4,4"-di(propiolonitrile) (2) linker for the self-assembly of organic monolayers and metal coordination at interfaces. The structure of the organic linker 2 was confirmed by single crystal X-ray diffraction analysis (XRD). On the densely packed Ag(111) surface, the terphenyl-4,4"-di(propiolonitrile) linkers self-assemble in a regular, molecular chevron arrangement exhibiting a Moiré pattern. After the exposure of the molecular monolayer to a beam of Gd atoms, the propiolonitrile groups get readily involved in metal–ligand coordination interactions. Distinct coordination motifs evolve with coordination numbers varying between three and six for the laterally-bound Gd centers. The linker molecules retain an overall flat adsorption geometry. However, only networks with restricted local order were obtained, in marked contrast to previously employed, simpler polyphenylene-dicarbonitrile 1 linkers.

Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator DOI: 10.3762/bjnano.6.31
ISSN: 2190-4286
URN: urn:nbn:de:swb:90-AAA1101004439
KITopen ID: 110100443
HGF-Programm 43.21.04; LK 01
Erschienen in Beilstein journal of nanotechnology
Band 6
Seiten 327-335
Bemerkung zur Veröffentlichung CCby-Lizenz 2.0
Schlagworte di(propiolonitrile) linker, lanthanides, metal–organic networks, molecular self-assembly, organic monolayers, single crystal X-ray diffraction analysis, UHV-STM
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